Number Memory Test - QTKTest
Remember an increasingly long random number. Test short‑term memory.
Test your short‑term memory
Number Memory Guide
What is Number Memory?
Number memory tasks test short‑term/working memory by showing a random digit sequence you must recall in order. Performance relates to digit span — the count of digits you can reliably reproduce.
Background and Research
Digit span appears in classic cognitive psychology and clinical scales (e.g., WAIS). Miller's '7 ± 2' suggests typical span around seven items, though modern work emphasizes chunking and variability across individuals and contexts.
How Difficulty and Scoring Work
Each level adds one digit and shows it for a limited time. If you enter the exact sequence, you advance. Your score is the highest level reached without error.
Related Concepts
- Short‑term memory
- Working memory
- Digit span
- Chunking strategies
Accuracy and Limitations
Online display, font, and timing affect readability. Results are indicative, not diagnostic. For clinical assessment, use standardized instruments.
Purpose
This page offers practice and self‑check. It is not a medical evaluation.
Number Memory FAQ
What is the goal of this test?
Remember and input the exact digits shown in order. Each success unlocks the next level with a longer number.
How does difficulty increase here?
One digit is added per level. Display time scales with length (base time plus ~0.8s per digit), then entry begins.
How is the score computed?
Your score is the highest level reached without error. Some runs allow retry at the same level; the primary indicator remains max level achieved.
Can I use backspace while entering?
Yes. You can correct before submitting. The final input must match the sequence exactly to pass.
Does number memory measure intelligence?
No. It reflects a specific memory facet. Strategy (chunking), attention, and practice strongly influence results.
Any tips to improve performance?
Use chunking (group digits), read with rhythm, avoid distractions, increase screen brightness, and breathe steadily for focus.
Is there a viewing time limit?
Yes. A progress bar counts down while the number is shown; when it ends, input mode starts automatically.
Will numbers repeat on retakes?
Sequences are randomly generated for each level. Exact repetition is unlikely but theoretically possible.
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